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August 26, 2017 4:19:53 PM CST


Impacts of Hurricane Harvey affecting Harris County; break in rainfall helping channels recede

The Harris County Flood Control District's Flood Operations team is actively monitoring rainfall trends, as well as measured rainfall amounts and water levels in bayous and creeks. Rainfall amounts have averaged four to five inches in the last 12 hours across Harris County. The break in the rain is helping area channels recede. Average rainfall in the last three hours is less than one inch in Harris County. 

Street flooding continues over large areas of northwest to east Harris County. Please check the Houston Transtar website at for a list of locations.

The Harris County Flood Operations team monitors our network of gages and due to quickly moving rain bands, these conditions can change rapidly. As of 1:00 PM, the following is a list of area bayous currently being affected: 

Out of bank conditions:

  • South Mayde Creek at Greenhouse Road level has crested and is falling.
  • Greens Bayou at US 59 level has crested and is falling. 

Nearing bankfull:

  • B100 Armand Bayou at Genoa-Red Bluff Road (gage 220) – Steady, at top of bank
  • L100 Little Cypress Creek at Becker (gage 1230) – Steady near crest, 1.6’ from top of bank
  • Chigger Creek at Windsong (gage 125) – Rising, 2.2’ from top of bank
  • A100 Clear Creek at Bay Area Blvd (gage 130) – Rising, 0.7’ below top of bank
  • Q100 Cedar Bayou at SH 146 (gage 1720) – Fluctuating, 0.4’ below top of bank
  • H100 Hunting Bayou at I-10 (gage 820) – Falling, 0.8’ below top of bank
  • G103 San Jacinto River at Rio Villa (gage 710) – Crested and falling, 0.2’ below top of bank
  • P130 Garners Bayou at BW8 (gage 1630) – Rising, 1.7’ below top of bank
  • K100 Cypress Creek at Cypresswood (gage 1110) – Rising, 2.5’ below top of bank
  • G103 San Jacinto River US 59 (gage 760) – Rising, 2.0’ below top of bank 

REMINDER: Do not drive or walk into high-water areas. For the next few hours, residents from Jersey Village to Katy should remain in place and only travel if absolutely needed. If faced with flooding, STAY PUT wherever you are, unless your life is threatened or you are ordered to evacuate.

A National Weather Service Flash Flood Warning remains in effect for Harris County until further notice.

The break in the rain is helping area channels recede, but the flood threat still remains as the Harvey continues to dump rain over Harris County. It is important for residents to stay tuned and pay close attention to additional rain throughout the remainder of the weekend.

As of 1:20 PM, the Clear Creek Second Outlet has been re-opened. For more information regarding the Second Outlet gates visit

The U.S. Army Corps of Engineers continues to monitor the Addicks and Barker dams and reservoirs. Both outlet gates were closed at 8 p.m. on Friday, August 25 and will remain closed until the threat of heavy rain has passed. For more news and information, visit

The Flood Control District's Flood Operations team continues in full operation and crews are out making necessary assessments around Harris County. The Flood Control District’s phone bank will remain open through the remainder of this event. Residents are urged to call with questions regarding flooding or to report any structural flooding at 713-684-4000. The Flood Control District works throughout the year to provide flood damage reduction benefits to the communities we serve.

Stay tuned and pay close attention to messages from emergency officials as this storm is quickly changing. Heed all advice given by local emergency officials. Evacuate only if you have been told to do so. 

When flooding is imminent the following are steps YOU CAN TAKE DURING THE STORM:

  • Restrict children from playing in flooded areas.
  • Remain in your home during the storm unless instructed to evacuate by local officials.
  • Move emergency supplies and valuables to a high, dry place in your residence.
  • Locate and put pets in a safe place.
  • In areas that normally experience flooding, move vehicles to driveways or in parking garages as the storm approaches.
  • Never drive into high water. Turn Around, Don’t Drown! Less than two feet of water can float and wash away a vehicle. Be especially cautious at underpasses and at night when water across roadways can be difficult to see.
  • The Harris County Office of Homeland Security and Emergency Management has disaster preparedness resources and the latest information about conditions in Harris County at The Flood Control District has a “Family Flood Preparedness” center at with helpful, printable resources and flood preparedness tips.
  • This flooding event is a reminder that all residents in this area should carry flood insurance. Contact your insurance agent for more information about purchasing flood insurance, or visit the National Flood Insurance Program at or call 1-888-379-9531. Please keep in mind that new insurance policies take 30 days to go into effect.

About the Harris County Flood Control District

The Harris County Flood Control District provides flood damage reduction projects that work, with appropriate regard for community and natural values. With more than 1,500 bayous and creeks totaling approximately 2,500 miles in length, the Flood Control District accomplishes its mission by devising flood damage reduction plans, implementing the plans and maintaining the infrastructure.